[libvirt PATCH 02/11] domain_conf: fix NULL dereference on error in virDomainObjCopyPersistentDef

The issue was introduced together with the function itself by commit <da1eba6bc8f58bfce34136710d1979a3a44adb17>. Calling `virDomainObjGetPersistentDef` may return NULL which is later passed to `virDomainDefFormat` where the `def` attribute is marked as NONNULL and later in `virDomainDefFormatInternalSetRootName` it is actually defererenced without any other check. Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com&gt; --- src/conf/domain_conf.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 5c30227212..eaad72ad0a 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -30933,6 +30933,12 @@ virDomainObjCopyPersistentDef(virDomainObjPtr dom, virDomainDefPtr cur; cur = virDomainObjGetPersistentDef(xmlopt, dom, parseOpaque); + if (!cur) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Get persistent config failed")); + return NULL; + } + return virDomainDefCopy(cur, xmlopt, parseOpaque, false); } -- 2.26.2